Nature of Science
What is a control group?
What is part of the experiment not being tested and used for comparison.
define physical property
What is a property of a substance that can be observed or measured without changing the chemical identity of the substance.
has a pH > 7
what is basic
Phase change from a gas to a solid
what is deposition
If volume goes down the pressure goes up. (what law is this)
What is Boyle’s Law?
The variable that you change in an experiment?
What is an independent variable
An example of an extensive Property
What is mass, volume, energy, length
_____ Acids are able to ionize completely in an aqueous solution
What is a Strong acid
the emission of radiation from an unstable nucleus
What is radioactive decay
The SI Unit of pressure
What is the pascal
Scientific Notation is what
What is a method of expressing really big or really small numbers
Where is the Noble Gases on the periodic table?
the elements are in group 8A on the periodic table
The _____ scale measures the OH- concentration, so it is the opposite of the pH scale
What is the pOH scale
Shorter wavelength/higher frequency light waves have higher energy, true or false?
True
equal volumes of gases at the same temperature and pressure contain equal numbers of molecules (what law is this)
What is Avogadro’s Law?
They cannot become the other
A positively charged ion formed when an atom loses one or more electrons
What is a cation?
a reaction in which two compounds break up into ions and change the cation or anion they are bonded to, forming two new compounds
What is a Double-replacement reaction
Split atomic nuclei in a process called nuclear ______.
fission
________ energy is the minimum amount of energy required in order to make a reaction take place.
Activation
The difference between science and pseudoscience
Pseudoscience has no basis in scientific fact. They could be disproved scientifically, can't be tested scientifically, or lack evidence to support them.
The 3rd shell of the Bohr Model holds up to how many electrons?
What is 8 electrons
Compound that produces H+ ions (H3O+) in an aqueous solution
What is a Arrhenius acid
The presence of a catalyst ______ the activation energy of a reaction.
lowers
The average kinetic energy of a gas is proportional to the ________ temperature.
absolute